DUKE ENERGY COMPLETES SALE OF INTEREST IN MEXICAN ASSET

CHARLOTTE, N.C. -- Duke Energy has completed the sale of its 30 percent equity interest in Compana de Nitrogeno de Cantarell, S.A. de C.V., to The BOC Group. The sale, announced in May, generated proceeds of $59.7 million. Cantarell operates a nitrogen production and delivery facility in the Bay of Campeche, Gulf of Mexico.

Duke Energy is a diversified energy company with a portfolio of natural gas and electric businesses, both regulated and unregulated, and an affiliated real estate company. Duke Energy supplies, delivers and processes energy for customers in North America and selected international markets. In 2004, the company celebrates a century of service with the 100th anniversary of its electric utility Duke Power. Headquartered in Charlotte, N.C., Duke Energy is a Fortune 500 company traded on the New York Stock Exchange under the symbol DUK. More information about the company is available on the Internet at: http://www.duke-energy.com.